... Display ModesFull screen, multiple screen, Sequence display, exchangable channel display. Audio4CH Recording ModesManual, Continue, alarm, motion detection Operating SystemEmbeded Linux ... Speedx2, x4,x6, single frame playback Playback SearchingDate & time, Manual recorder time list, Schedule list Network ProtocolsTCP/IP, DHCP & static ... 60 degree C 4 CH H.264 Surveillance Security CCTV DVR System